The Magni has a switch that allows to switch between high and low gain. I’d try turning on high and see if it helps.

Sorry I left that out I flipped that to high and it helped but for what I have wrapped up in all this I feel they should make my ears bleed lol. If I need to upgrade the amp I will just don’t know a lot about all this

the HD650s are not the most sensitive headphones, so they will quite likely be quieter than whatever you're comparing them to at the same output level, but the magni has way more than enough power to drive them. check all the volume settings along your signal path. the magni also has a gain switch on the back, though I doubt you would need high gain.

This isn’t a deal breaker for me I’m very happy with the 650s just didn’t know if I had the wrong amp or something

You really shouldn't be listening over 80db

Trust me I can’t handle anything close to full but I always want to push that limit when I first get some. Mainly wanted to make sure what I was doing and my setup was adequate for the headset

Why do you want to push the limit?

You never ram your car or bike to its limiter? I don’t know I always want to see what things can do

Just tried the 6XX’s from my Magni 3 from a Modi 3 and I could not listen to it turned all the way up as it was starting to be painful. Though not the most accurate way of testing I have a calibrated mic hooked up to a old iPhone and with a little Blues Travellers I got 111 db with the mic parallel with the pads and my hand over top like I said probably not real accurate but I doubt too far off.
If you are listening that loud that will become a problem for your hearing.
The problem could be the Go Xlr not putting out enough voltage for the line out this will definitely not play as loud as it could. Did the same test with a Dragonfly Red and it gave me 99 db and it was louder than I tend to listen too but it was not painful and it puts out 2.1v which is spot on for standard line out and using it as a dac for the Magni was close to the same as the Modi as a dac.

Good info thank you!

Your more than welcome.

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A car and bike can be repaired, an engine can be swapped.

Your ears, once damaged by high volume CAN NOT PHYSICALLY RECOVER, like ever. With hearing dmg, it's a one and done thing, don't treat it lightly, you'll regret it way before you're too old to care

My hd650s easily get loud enough with my s20fe + Abigail dac

As someone who has blown ears with half his hearing lost due to loud noises, I can wholeheartedly tell you that you're a dumbass for playing your headphones on full tilt, you will definitely regret this one day once your ears start ringing and it won't go away 😉

If you really want to push these to "their limit" then you will as well push your poor ears to their limits. You might be better off with something else if you want this slam and you don't achieve this by making your ears bleed.

If I were you I would read into running a external subwoofer with your cans if you want to feel more, or these simply aren't for you and you need idk, meeze 99? Or other cans with strong bass and dynamic sound.

I have a slight tinnitus from partying years ago and trust me, you don't want to have this. Loudness won't get you anywhere, maybe EQ will help, but please take good car of your ears, you can't simply swap these if they ever get damaged.